* chore: fix types

* fix more types

* chore: mote fixes

* fix frmat

* chore: fix tests

* chore: fix type

* chore: cleanup

* chore: cleanup

Co-authored-by: Rhys Arkins <rhys@arkins.net>

Closes #6142

Closes #5994

* chore(deps): update dependency prettier to v2

* Run prettier-fix

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Jamie Magee <jamie.magee@gmail.com>

Adds an optional new object `defaultConfig` to datasources. This object will be merged into config during the update flattening process, and before the last applyPackageRules. i.e. it can still be overridden by packageRules.

fix: Revert "fix: Revert "feat(internal): datasource defaultRegistryUrls / appendRegistry… (#5686)""

This reverts commit 0622c814.

This reverts commit aa7f2912.